*I wrote the following extremely quickly to keep it short. Apologies.
I believe that the display that was added to the latest development version of the game should cover these requests for HQ display.
Problem
In order to confirm the amount of items you possess when crafting or gathering, you have to check from the number shown in the item details, and it's not possible to check how many HQ items you have. Due to this, you have to open up your inventory and look for your HQ items, which can be hard to locate sometimes.
What needs to be done
We'd like to make it easy to check how many HQ and NQ crafting/gathering items you possess.
Solution #1
Display the individual number of NQ and HQ items for the item you have selected in each log.
→Remaining problem: You will have to search through your inventory to see the stats of HQ items.
Solution #2
Display the number of NQ and HQ items you possess in the item details.
→Remaining problem: Same as plan #1
Solution #3
Display both an icon that displays NQ item details as well as an icon that displays HQ item details in the crafting and gathering window.
→Remaining problem: Unless you hover over the icon, you won't be able to tell how many NQ or HQ items you have.
Amongst these solutions, we've already addressed #1 in the latest development version of the game.
The above is a recent snapshot. We've added displays for the number of items you possess and the number of items you can craft. (Translation note: On the left "所持数" refers to the number of each item you posses. On the right "製作可能数" refers to the number of items you can craft.)
Originally we had looked into trying to display a list in the crafting window's center portion, but the stress for applying this process for the 400 slots of inventory space was unexpectedly large, and we addressed it with the current system that shows the number of items you are currently focused on.
Next, solution #2 has the remaining problem where you cannot check the stats of the HQ item, so we decided to prioritize solution #3. As there other a lot of other UI aspects that have priority for implementation, we are currently unable to work on this at the moment. However, we will be working on the gathering UI and fishing UI sequentially.
The one aspect that I can guarantee will be implemented in patch 2.1 is the display shown in the snapshot above, which is solution #1.
Ultimately the order we address this will be as follows: solution #1 (already completed), solution #3 (unimplemented as of yet), solution #2 (currently looking into a method that does not have place a lot of stress on the system).